Zwave Error 1405 - Node failed to decode the message

Configuration Z-Wave
1

Hello,

Looking for some guidance on how I should go about troubleshooting the Zwave error I am getting occasionally (below). It seems to occur randomly to various devices (seemingly only to Inovelli Black Switches). Most times, if I just retrigger / rerun the automation it will work fine.

So far I have tried various reboots, reloads, and restarts and reinterviewing all my devices. I’m running Home Assistant in docker on Ubuntu server alongside Z-Wave
JS. My controller is a Zooz ZST39 LR running firmware 1.50.

The only thing I’ve come across so far that might be indicative of an issue is that my controller keeps showing as jammed which seems to coincide with the error. My Zwave network is 17 devices but none of them are sensors and the overall traffic should be fairly minimal.

Thank you!

(MainThread) [homeassistant.components.automation.testing] Error while executing automation automation.testing: Unable to set value 123-38-0-targetValue: zwave_error: Z-Wave error 1405 - The node failed to decode the message. (ZW1405)
2024-12-31 13:13:59.665 ERROR

UPDATE: spent some time watching the logs on Zwave JS for traffic and the network is pretty much silent apart from the controller reporting it’s signal strength.

2

Any resolution? Having the same error with Inovelli Red dimmers, seemingly random as well.

3

I’m still having Zwave issues here and there but a lot of them got resolved when I removed S2 security from all my devices except locks. One thing you can check is how often your coordinator is reporting being jammed.

4

I have seen a couple of messages about the transmission queue being full. I also have S2 enabled on all my Inovelli stuff, but I only have 37 zwave devices all together. Anyway, it gives me somewhere to start. Thanks!